Browser Plugin: Implement Back, Forward, and Go.

content/browser/browser_plugin/browser_plugin_guest.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A BrowserPluginGuest represents the browser side of browser <--> renderer
 // communication. A BrowserPlugin (a WebPlugin) is on the renderer side of
 // browser <--> guest renderer communication. The 'guest' renderer is a
 // <browser> tag.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. It has a
@@ skipping 110 matching lines @@
 
   // The guest needs to notify the plugin in the embedder to start (or stop)
   // accepting touch events.
   void SetIsAcceptingTouchEvents(bool accept);
 
   // Exposes the protected web_contents() from WebContentsObserver.
   WebContents* GetWebContents();
 
   // Overridden in tests.
   virtual bool ViewTakeFocus(bool reverse);
+  // If possible, navigate the guest to |relative_index| entries away from the
+  // current navigation entry.
+  virtual void Go(int relative_index);
   // Overridden in tests.
   virtual void SetFocus(bool focused);
   // Reload the guest.
   virtual void Reload();
   // Stop loading the guest.
   virtual void Stop();
 
  private:
   friend class TestBrowserPluginGuest;
 
@@ skipping 36 matching lines @@
   IDMap<RenderViewHost> pending_updates_;
   int pending_update_counter_;
   base::TimeDelta guest_hang_timeout_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_